What is the formal term for the measure of reflectivity that dictates how much solar energy bounces back into space versus how much is absorbed?

Answer

Albedo

Albedo is the specific property quantified as a measure of reflectivity, describing the fraction of solar radiation reflected from a surface back towards the source of illumination.

What is the formal term for the measure of reflectivity that dictates how much solar energy bounces back into space versus how much is absorbed?
Earthsurfacereflectivity